Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811311 | Seismic detector assembly having polarized terminals | S. E. Haggard | 1989-03-07 |
| 4809245 | Seismic detector housing assembly | S. E. Haggard | 1989-02-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811311 | Seismic detector assembly having polarized terminals | S. E. Haggard | 1989-03-07 |
| 4809245 | Seismic detector housing assembly | S. E. Haggard | 1989-02-28 |